61332557 has 8 divisors (see below), whose sum is σ = 72055200. Its totient is φ = 51467760.

The previous prime is 61332541. The next prime is 61332563. The reversal of 61332557 is 75523316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61332557 - 2⁴ = 61332541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61332457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214307 + ... + 214592.

It is an arithmetic number, because the mean of its divisors is an integer number (9006900).

Almost surely, 2^61332557 is an apocalyptic number.

It is an amenable number.

61332557 is a deficient number, since it is larger than the sum of its proper divisors (10722643).

61332557 is a wasteful number, since it uses less digits than its factorization.

61332557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428923.

The product of its digits is 18900, while the sum is 32.

The square root of 61332557 is about 7831.5105184121. The cubic root of 61332557 is about 394.3637827319.

The spelling of 61332557 in words is "sixty-one million, three hundred thirty-two thousand, five hundred fifty-seven".